The use of starch for ruminant feed is less efficient, and abundant amount of starch given to ruminant can cause acidosis, so with give NPN (urea). Efficiency use of urea as nitrogen source depend on fermentability carbohydrate by microorganism rumen to be converted to the protein microbes. This research aims to know the influence of steaming of cassava dried by various level of urea to dry matter and organic matter degradability in in vitro and in sacco methods. The steaming cassava dried with urea conducted to 5 kg of dough cassava dried by urea with 50 � 60% water capacity for 20 minutes. Complete randomized design (CRD) used with four replications. The level of urea are: A = 0%; B = 3%; C = 6% and D = 9%, respectively. The biomass resulted was analysed for crude protein and evaluated in vitro Tilley and Terry and in sacco degradation. The result of research indicated that the crude protein biomass of treatment A = 2.10; B = 7.47; C = 14.12 and D = 23.27%, respectively, it increased significantly defferent (P<0.01). Dry matter and organic matter degradation with in vitro were not different. Dry matter degradation of treatment A = 83.20; B = 83.21; C = 82.52; and D = 84.03%, respectively, while organic degradation of treatment A = 93.63; B = 93.72; C = 93.33 and D = 94.84%, respectively. Degradation theory (DT) of dry matter showed sifnificantly different (P<0.01), dry matter digesting of treatment A = 90.59%; B = 91.06%; C = 89.23%; and D = 88.16%, respectively. While the result of cassava dried and urea by steaming were able to improve the quality and the better digesting level and reduced the kinetic degradation in rumen.